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run code in 300+ PHP versions simultaneously

@ 2022-11-02T17:52:52Z

<?php

$array =    [    
[  
    "id"           =>  1,  
    "recipient"    => "User",
    "userName"     => "Max Mustermann",
    "locationName" => "Test Location"
],      
[  
    "id"           =>  2,  
    "recipient"    => "Location",
    "userName"     => "Susi Mustermann",
    "locationName" => "Another Location"
],     
[  
    "id"           =>  3,  
    "recipient"    => "Location",
    "userName"     => "Susi Mustermann",
    "locationName" => "Wow Much Location"
],     
[  
    "id"           =>  4,  
    "recipient"    => "User",
    "userName"     => "Fritz Kalkbrenner",
    "locationName" => "Good Music"
],     
[  
    "id"           =>  5,  
    "recipient"    => "Location",
    "userName"     => "Paul Kalkbrenner",
    "locationName" => null
],  
];

usort($array,function($a,$b){
  $sort2key = strtolower($a['recipient']).'Name';
  return $a['recipient'] <=> $b['recipient']
  ?: is_null($a['locationName']) <=> is_null($b['locationName'])
  ?: $a[$sort2key] <=> $b[$sort2key];
});

var_export($array);

Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3: array ( 0 => array ( 'id' => 2, 'recipient' => 'Location', 'userName' => 'Susi Mustermann', 'locationName' => 'Another Location', ), 1 => array ( 'id' => 3, 'recipient' => 'Location', 'userName' => 'Susi Mustermann', 'locationName' => 'Wow Much Location', ), 2 => array ( 'id' => 5, 'recipient' => 'Location', 'userName' => 'Paul Kalkbrenner', 'locationName' => NULL, ), 3 => array ( 'id' => 4, 'recipient' => 'User', 'userName' => 'Fritz Kalkbrenner', 'locationName' => 'Good Music', ), 4 => array ( 'id' => 1, 'recipient' => 'User', 'userName' => 'Max Mustermann', 'locationName' => 'Test Location', ), )

preferences:dark modelive previewkey bindings

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